The Open Box OEM Apple 85W MagSafe 2 Power Adapter with Magnetic DC Connector in White is a genuine Apple product designed for use with various MacBook models. This power adapter has a voltage of 20V or 18.5V and an output current of 3.5A, providing a maximum output power of 85W. It is compatible with Apple MacBook Pro A1398 and other MacBook models such as MacBook Air and MacBook Pro Retina. The adapter features a magnetic DC connector for easy connection and is ideal for those in need of a reliable power supply for their Apple laptop.